A nice improvement of Symfony 3.2 is support of PHP constants in YAML files.
This allows to define a service from a class and some constructor parameters defined as PHP constants, all in a services.yml file (no PHP code involved, just inject it !).
Let's try it with a PSR-7 HTTP client :
services:
# Concrete implementation of HTTP client
app.api_client.http_client:
class: Http\Client\Curl\Client
arguments:
- "@app.api_client.message_factory"
- "@app.api_client.stream_factory"
- !php/const:CURLOPT_CONNECTTIMEOUT: 4
!php/const:CURLOPT_TIMEOUT: 10
# Concrete implementation of message factory
app.api_client.message_factory:
class: Http\Message\MessageFactory\GuzzleMessageFactory
# Concrete implementation of stream factory
app.api_client.stream_factory:
class: Http\Message\StreamFactory\GuzzleStreamFactory
# Use the fully YAML configured HttpClient in your service !
app.api_client:
class: App\Api\Client
arguments:
- "@app.api_client.http_client"
...
This example is based on PHP-HTTP PSR7 compliant library and documentation (http://php-http.readthedocs.io/en/latest/clients/curl-client.html)
